condition	mean	min	max
0 h after light	13.636099999999999	13.463	13.8092
4 h after light	18.74185	18.0944	19.3893
8 h after light	20.78165	19.2053	22.358
4 h after dark	17.85805	15.375	20.3411
8 h after dark	16.007649999999998	14.94	17.0753
12 h after dark	14.9176	13.5298	16.3054